In 1700 Livinus Lanckrock tended vines in Ghent. His great-great-great-grandson Pierre was commissioned by King Leopold II to design Belgium’s national basilica — seven towers, 146 metres. It was never built. Pierre’s foundations are still under the basilica at Koekelberg.
This is the documented line: 412 people, read directly from Paul Langerock’s parish-register research. Where he wasn’t certain, the drawing isn’t either.